// src/components/ui/Button.tsx
import React from 'react'

type Variant = 'primary' | 'secondary' | 'ghost' | 'danger'
type Size = 'sm' | 'md' | 'lg'

interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: Variant
  size?: Size
  loading?: boolean
  children: React.ReactNode
}

const variantMap: Record<Variant, string> = {
  primary: 'btn-primary',
  secondary: 'btn-secondary',
  ghost: 'btn-ghost',
  danger: 'btn-danger',
}

const sizeMap: Record<Size, string> = {
  sm: 'px-3 py-1.5 text-xs',
  md: 'px-4 py-2.5 text-sm',
  lg: 'px-6 py-3 text-base',
}

export function Button({
  variant = 'primary',
  size = 'md',
  loading = false,
  children,
  className = '',
  disabled,
  ...props
}: ButtonProps) {
  return (
    <button
      className={`${variantMap[variant]} ${sizeMap[size]} ${className}`}
      disabled={disabled || loading}
      {...props}
    >
      {loading && (
        <svg
          className="animate-spin h-4 w-4 shrink-0"
          xmlns="http://www.w3.org/2000/svg"
          fill="none"
          viewBox="0 0 24 24"
        >
          <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
          <path
            className="opacity-75"
            fill="currentColor"
            d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z"
          />
        </svg>
      )}
      {children}
    </button>
  )
}